notepixmapfactory.cpp

LINUX下的混音软件

        m_p->drawNoteCharacter(m_left + s1.x() - hotspot.x(), y, flagChar);
    }
}

void
NotePixmapFactory::drawStem(const NotePixmapParameters &params,
                            const QPoint &s0, const QPoint &s1,
                            int shortening)
{
    if (params.m_stemGoesUp)
        shortening = -shortening;
    for (int i = 0; i < getStemThickness(); ++i) {
        m_p->drawLine(m_left + s0.x() + i, m_above + s0.y(),
                      m_left + s1.x() + i, m_above + s1.y() - shortening);
    }
}

void
NotePixmapFactory::makeRoomForBeams(const NotePixmapParameters &params)
{
    int beamSpacing = (int)(params.m_width * params.m_gradient);

    if (params.m_stemGoesUp) {

        beamSpacing = -beamSpacing;
        if (beamSpacing < 0)
            beamSpacing = 0;
        m_above += beamSpacing + 2;

        // allow a bit extra in case the h fixpoint is non-normal
        m_right = std::max(m_right, params.m_width + m_noteBodyWidth);

    } else {

        if (beamSpacing < 0)
            beamSpacing = 0;
        m_below += beamSpacing + 2;

        m_right = std::max(m_right, params.m_width);
    }
}

void
NotePixmapFactory::drawShallowLine(int x0, int y0, int x1, int y1,
                                   int thickness, bool smooth)
{
    if (!smooth || m_inPrinterMethod || (y0 == y1)) {

        if (!m_inPrinterMethod) {
            if (m_selected)
                m_p->painter().setBrush(GUIPalette::getColour(GUIPalette::SelectedElement));
            else
                m_p->painter().setBrush(Qt::black);
        }
        if (thickness < 4) {
            for (int i = 0; i < thickness; ++i) {
                m_p->drawLine(x0, y0 + i, x1, y1 + i);
            }
        } else {
            Profiler profiler("NotePixmapFactory::drawShallowLine(polygon)");
            QPointArray qp(4);
            qp.setPoint(0, x0, y0);
            qp.setPoint(1, x0, y0 + thickness);
            qp.setPoint(2, x1, y1 + thickness);
            qp.setPoint(3, x1, y1);
            m_p->drawPolygon(qp);
        }

        return ;
    }

    Profiler profiler("NotePixmapFactory::drawShallowLine(points)");

    int dv = y1 - y0;
    int dh = x1 - x0;

    static std::vector<QColor> colours, selectedColours;
    if (colours.size() == 0) {
        int h, s, v;
        QColor c = GUIPalette::getColour(GUIPalette::SelectedElement);
        c.hsv(&h, &s, &v);
        for (int step = 0; step < 256; step += (step == 0 ? 63 : 64)) {
            colours.push_back(QColor( -1, 0, step, QColor::Hsv));
            selectedColours.push_back(QColor(h, 255 - step, v, QColor::Hsv));
        }
    }

    int cx = x0, cy = y0;

    int inc = 1;

    if (dv < 0) {
        dv = -dv;
        inc = -1;
    }

    int g = 2 * dv - dh;
    int dg1 = 2 * (dv - dh);
    int dg2 = 2 * dv;

    int segment = (dg2 - dg1) / 4;

    while (cx < x1) {

        if (g > 0) {
            g += dg1;
            cy += inc;
        } else {
            g += dg2;
        }

        int quartile = segment ? ((dg2 - g) / segment) : 0;
        if (quartile < 0)
            quartile = 0;
        if (quartile > 3)
            quartile = 3;
        if (inc > 0)
            quartile = 4 - quartile;
        /*
                NOTATION_DEBUG
                    << "x = " << cx << ", y = " << cy
                    << ", g = " << g << ", dg1 = " << dg1 << ", dg2 = " << dg2
                    << ", seg = " << segment << ", q = " << quartile << endl;
        */ 
        // I don't know enough about Qt to be sure of this, but I
        // suspect this may be some of the most inefficient code ever
        // written:

        int off = 0;

        if (m_selected) {
            m_p->painter().setPen(selectedColours[quartile]);
        } else {
            m_p->painter().setPen(colours[quartile]);
        }

        m_p->drawPoint(cx, cy);
        drawBeamsCount ++;

        if (thickness > 1) {
            if (m_selected) {
                m_p->painter().setPen(GUIPalette::getColour(GUIPalette::SelectedElement));
            } else {
                m_p->painter().setPen(Qt::black);
            }
        }

        while (++off < thickness) {
            m_p->drawPoint(cx, cy + off);
            drawBeamsCount ++;
        }

        if (m_selected) {
            m_p->painter().setPen(selectedColours[4 - quartile]);
        } else {
            m_p->painter().setPen(colours[4 - quartile]);
        }

        m_p->drawPoint(cx, cy + off);
        drawBeamsCount ++;

        ++cx;
    }

    m_p->painter().setPen(Qt::black);
}

void
NotePixmapFactory::drawBeams(const QPoint &s1,
                             const NotePixmapParameters &params,
                             int beamCount)
{
    clock_t startTime = clock();

    // draw beams: first we draw all the beams common to both ends of
    // the section, then we draw beams for those that appear at the
    // end only

    int startY = m_above + s1.y(), startX = m_left + s1.x();
    int commonBeamCount = std::min(beamCount, params.m_nextBeamCount);

    unsigned int thickness;
    (void)m_font->getBeamThickness(thickness);

    int width = params.m_width;
    double grad = params.m_gradient;
    bool smooth = m_font->isSmooth();
    int spacing = getLineSpacing();

    int sign = (params.m_stemGoesUp ? 1 : -1);

    if (!params.m_stemGoesUp)
        startY -= thickness;

    if (!smooth)
        startY -= sign;
    else if (grad > -0.01 && grad < 0.01)
        startY -= sign;

    if (m_inPrinterMethod) {
        startX += getStemThickness() / 2;
    }

    for (int j = 0; j < commonBeamCount; ++j) {
        int y = sign * j * spacing;
        drawShallowLine(startX, startY + y, startX + width,
                        startY + (int)(width*grad) + y,
                        thickness, smooth);
        drawBeamsBeamCount ++;
    }

    int partWidth = width / 3;
    if (partWidth < 2)
        partWidth = 2;
    else if (partWidth > m_noteBodyWidth)
        partWidth = m_noteBodyWidth;

    if (params.m_thisPartialBeams) {
        for (int j = commonBeamCount; j < beamCount; ++j) {
            int y = sign * j * spacing;
            drawShallowLine(startX, startY + y, startX + partWidth,
                            startY + (int)(partWidth*grad) + y,
                            thickness, smooth);
            drawBeamsBeamCount ++;
        }
    }

    if (params.m_nextPartialBeams) {
        startX += width - partWidth;
        startY += (int)((width - partWidth) * grad);

        for (int j = commonBeamCount; j < params.m_nextBeamCount; ++j) {
            int y = sign * j * spacing;
            drawShallowLine(startX, startY + y, startX + partWidth,
                            startY + (int)(partWidth*grad) + y,
                            thickness, smooth);
            drawBeamsBeamCount ++;
        }
    }

    clock_t endTime = clock();
    drawBeamsTime += (endTime - startTime);
}

void
NotePixmapFactory::drawSlashes(const QPoint &s0,
                               const NotePixmapParameters &params,
                               int slashCount)
{
    unsigned int thickness;
    (void)m_font->getBeamThickness(thickness);
    thickness = thickness * 3 / 4;
    if (thickness < 1)
        thickness = 1;

    int gap = thickness - 1;
    if (gap < 1)
        gap = 1;

    bool smooth = m_font->isSmooth();

    int width = m_noteBodyWidth * 4 / 5;
    int sign = (params.m_stemGoesUp ? -1 : 1);

    int offset =
        (slashCount == 1 ? m_noteBodyHeight * 2 :
         slashCount == 2 ? m_noteBodyHeight * 3 / 2 :
         m_noteBodyHeight);
    int y = m_above + s0.y() + sign * (offset + thickness / 2);

    for (int i = 0; i < slashCount; ++i) {
        int yoff = width / 2;
        drawShallowLine(m_left + s0.x() - width / 2, y + yoff / 2,
                        m_left + s0.x() + width / 2 + getStemThickness(), y - yoff / 2,
                        thickness, smooth);
        y += sign * (thickness + gap);
    }
}

void
NotePixmapFactory::makeRoomForTuplingLine(const NotePixmapParameters &params)
{
    int lineSpacing =
        (int)(params.m_tuplingLineWidth * params.m_tuplingLineGradient);
    int th = m_tupletCountFontMetrics.height();

    if (params.m_tuplingLineY < 0) {

        lineSpacing = -lineSpacing;
        if (lineSpacing < 0)
            lineSpacing = 0;
        m_above = std::max(m_above, -params.m_tuplingLineY + th / 2);
        m_above += lineSpacing + 1;

    } else {

        if (lineSpacing < 0)
            lineSpacing = 0;
        m_below = std::max(m_below, params.m_tuplingLineY + th / 2);
        m_below += lineSpacing + 1;
    }

    m_right = std::max(m_right, params.m_tuplingLineWidth);
}

void
NotePixmapFactory::drawTuplingLine(const NotePixmapParameters &params)
{
    int thickness = getStaffLineThickness() * 3 / 2;
    int countSpace = thickness * 2;

    QString count;
    count.setNum(params.m_tupletCount);
    QRect cr = m_tupletCountFontMetrics.boundingRect(count);

    int tlw = params.m_tuplingLineWidth;
    int indent = m_noteBodyWidth / 2;

    if (tlw < (cr.width() + countSpace * 2 + m_noteBodyWidth * 2)) {
        tlw += m_noteBodyWidth - 1;
        indent = 0;
    }

    int w = (tlw - cr.width()) / 2 - countSpace;

    int startX = m_left + indent;
    int endX = startX + w;

    int startY = params.m_tuplingLineY + m_above + getLineSpacing() / 2;
    int endY = startY + (int)(params.m_tuplingLineGradient * w);

    if (startY == endY)
        ++thickness;

    int tickOffset = getLineSpacing() / 2;
    if (params.m_tuplingLineY >= 0)
        tickOffset = -tickOffset;

    //    NOTATION_DEBUG << "adjusted params.m_tuplingLineWidth = "
    //			 << tlw
    //			 << ", cr.width = " << cr.width()
    //			 << ", tickOffset = " << tickOffset << endl;
    //    NOTATION_DEBUG << "line: (" << startX << "," << startY << ") -> ("
    //			 << endX << "," << endY << ")" << endl;

    bool smooth = m_font->isSmooth();

    if (!params.m_tuplingLineFollowsBeam) {
        m_p->drawLine(startX, startY, startX, startY + tickOffset);
        drawShallowLine(startX, startY, endX, endY, thickness, smooth);
    }

    m_p->painter().setFont(m_tupletCountFont);
    if (!m_inPrinterMethod)
        m_p->maskPainter().setFont(m_tupletCountFont);

    int textX = endX + countSpace;
    int textY = endY + cr.height() / 2;
    //    NOTATION_DEBUG << "text: (" << textX << "," << textY << ")" << endl;

    m_p->drawText(textX, textY, count);

    startX += tlw - w;
    endX = startX + w;

    startY += (int)(params.m_tuplingLineGradient * (tlw - w));
    endY = startY + (int)(params.m_tuplingLineGradient * w);

    //    NOTATION_DEBUG << "line: (" << startX << "," << startY << ") -> ("
    //			 << endX << "," << endY << ")" << endl;

    if (!params.m_tuplingLineFollowsBeam) {
        drawShallowLine(startX, startY, endX, endY, thickness, smooth);
        m_p->drawLine(endX, endY, endX, endY + tickOffset);
    }
}

void
NotePixmapFactory::drawTie(bool above, int length, int shift)
{
#ifdef NASTY_OLD_FLAT_TIE_CODE

    int tieThickness = getStaffLineThickness() * 2;
    int tieCurve = m_font->getSize() * 2 / 3;
    int height = tieCurve + tieThickness;
    int x = m_left + m_noteBodyWidth;
    int y = (above ? m_above - height - tieCurve / 2 :
             m_above + m_noteBodyHeight + tieCurve / 2 + 1);
    int i;

    length -= m_noteBodyWidth;
    if (length < tieCurve * 2)
        length = tieCurve * 2;
    if (length < m_noteBodyWidth * 3) {
        length += m_noteBodyWidth - 2;
        x -= m_noteBodyWidth / 2 - 1;
    }

    for (i = 0; i < tieThickness; ++i) {

        if (above) {

            m_p->drawArc
            (x, y + i, tieCurve*2, tieCurve*2, 90*16, 70*16);

            m_p->drawLine
            (x + tieCurve, y + i, x + length - tieCurve - 2, y + i);

            m_p->drawArc
            (x + length - 2*tieCurve - 1, y + i,
             tieCurve*2, tieCurve*2, 20*16, 70*16);

        } else {